I have unistalled and reinstalled this version of MatLab on my computer and the problem continues.

# Why won't anything plot? 6 errors in 3 lines of code.

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I'm working on a larger project and it wouldn't plot and gave me a bunch of errors about things that weren't even a part of my code. I tried a simple code to see if it wiuld plot, but I'm getting the same errors. I've closed and reloaded MatLab and it continues to error.

x = [1 2 3 4 5];

y = [1 2 3 4 5];

plot(x,y)

Above is the code to plot and below are the errors.

>> Untitled

Undefined function 'claNotify' for input arguments of type 'matlab.graphics.axis.Axes'.

Error in cla (line 42)

claNotify(ax,extra{:});

Error in newplot>ObserveAxesNextPlot (line 152)

cla(ax, 'reset', hsave);

Error in newplot (line 93)

ax = ObserveAxesNextPlot(ax, hsave);

Error in matlab.graphics.internal.newplotwrapper (line 12)

axReturn = newplot(varargin{:});

Error in Untitled (line 3)

plot(x,y)

I'm running MATLAB R2018b - academic use. Thanks for any suggestions.

### Answers (6)

Star Strider
on 7 Feb 2019

It’s always worth running these commands:

restoredefaultpath

rehash toolboxcache

from your Command Window (or a script) before you click on the Contact Us link in the upper right corner of this page to ask MathWorks for Technical support. (If you need to do that, run the ver command first.)

##### 3 Comments

Rik
on 1 Aug 2019

Comment posted as flag by Andreas Junge:

I had the same message, after the commands Problem was solved!

Matt Gaidica
on 7 Feb 2019

Try:

open plot

See if plot is a variable or if the project has redefined it.

##### 4 Comments

Veda Upadhye
on 19 Feb 2019

One possible explanation of this issue could be shadowing of 'plot' or built-in MATLAB functions that are internally used by 'plot'. You can verify this using the below example (for 'plot' and other functions in your error stack trace):

which -all plot

##### 0 Comments

Abdallah Ghazi Faisal Zaid Alkilani
on 28 Mar 2020

I had a similar issue and I think the culprit is a function called newplot.m.

newplot.m function has subfunctions inside that were not terminated with 'end'.

I added an 'end' statement for each function inside newplot.m:

- function axReturn = newplot(hsave)
- function fig = ObserveFigureNextPlot(fig, hsave)
- function ax = ObserveAxesNextPlot(ax, hsave)

It has worked so far *fingers crossed*.

You can open the file to edit by typing >> open newplot;

I hope this helps.

##### 1 Comment

Rik
on 28 Mar 2020

I would be very careful with recommending people to edit internal Matlab functions. Those should not be edited, because you have no way of knowing what functions rely on the function behaving the exact way it does.

Apart from that: a function is allowed not to terminate with an end keyword, as long as non of the functions do so. This used to be the default; Matlab would even warn you about the unnecessary closing end statements.

Nurye Hassen
on 6 Aug 2020

##### 0 Comments

Nurye Hassen
on 6 Aug 2020

Edited: Nurye Hassen
on 6 Aug 2020

To solve the problem once and for all do the following on command window.

open plot

then right click on the plot file on the editor and select "show in folder" and check the path. For your case it should be where you installed the MATLAB like...

C:\Program Files\MATLAB\R2017b\toolbox\matlab\graph2d

if you got it in Documents or other folder delete all the files or ZIP and keep it far away.

Let me know if didn't solve it.

##### 0 Comments

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